Web scraping skill using Chrome + WebMCP

Web scraping using Chrome + WebMCP. Primary method for all web crawling tasks.

Spider — Web Scraping Tool

This is the default web scraping method, replacing older approaches like web_fetch.

---

Trigger Conditions

Use this skill when user says:

Keywords	Action
抓取 / crawl / scrape / fetch	Use Chrome + WebMCP to scrape web pages
采集	Same as above
获取...新闻	Scrape news pages
从...网站	Specify website to scrape
同花顺	Scrape Tonghuashun (10jqka) data
东方财富	Scrape East Money data
雪球	Scrape Xueqiu data
百度	Search or scrape Baidu content

---

Usage Examples

User Input	Execution
"抓取光库科技的新闻"	Open Tonghuashun in Chrome, extract news
"抓取宁德时代的股吧"	Open East Money guba in Chrome
"从同花顺抓取xxx"	Open Tonghuashun page in Chrome
"search xxx"	Open Google search in Chrome
"查一下xxx"	Search or scrape in Chrome

---

Operation Flow

1. Check Chrome Status

javascript

{ action: "status" }

If not running, start it:

javascript

{ action: "start" }

2. Open Target Page

javascript

{ action: "open", targetUrl: "https://stockpage.10jqka.com.cn/300620/news/", target: "host" }

3. Get Page Snapshot

javascript

{ action: "snapshot", targetId: "xxx", maxChars: 20000 }

4. Page Interaction (click, type, etc.)

javascript

{ action: "act", targetId: "xxx", request: {"kind": "click", ref: "e33"} }

5. Cleanup: Return to about:blank

javascript

{ action: "navigate", targetId: "xxx", url: "about:blank" }

---

Common Website Templates

Tonghuashun Stock News

text

URL: https://stockpage.10jqka.com.cn/{stock_code}/news/
Example: https://stockpage.10jqka.com.cn/300620/news/

East Money Guba (Stock Forum)

text

URL: https://guba.eastmoney.com/list,{stock_code}.html
Example: https://guba.eastmoney.com/list,300620.html

Xueqiu (Snowball)

text

URL: https://xueqiu.com/S/SZ{stock_code}
Example: https://xueqiu.com/S/SZ300620

Baidu News Search

text

URL: https://www.baidu.com/s?wd={keyword}&tn=news

---

Chrome Setup (One-time)

1. Open Chrome Flags:
   • chrome://flags/#enable-experimental-web-platform-features → Enabled
   • chrome://flags/#enable-webmcp-testing → Enabled
2. Fully quit Chrome (Cmd+Q) and restart

---

Important Rules

1. Use target="host" instead of "sandbox"
2. Must cleanup after each task:
   • If multiple tabs exist, keep only one, close others
   • The remaining tab must navigate to about:blank
   • If multiple about:blank tabs exist, keep only the latest one, close others
   • Use browser action: tabs to check current tab status
   • After cleanup, ensure only one about:blank tab remains
3. Reuse existing tabs, avoid opening new tabs frequently
4. Handle anti-scraping sites: Tonghuashun, East Money need complete JavaScript loading

---

Error Handling

Error	Solution
Sandbox unavailable	Use target="host"
Slow page load	Wait for snapshot to return before操作
Content extraction failed	Use snapshot's maxChars to get more content
Anti-scraping blocked	Try other finance sites or wait and retry

---

Default Scraping Priority

1. Spider (Chrome + WebMCP) ← Primary method

   • Suitable for: Finance websites, stock news, forums
   • Advantages: Full JavaScript rendering, interactive

2. web_fetch ← Backup method

   • Suitable for: Simple static pages
   • Disadvantage: Cannot handle JavaScript-rendered pages